题目信息
Of the 2,500 tons of ore mined daily at a quarry, 0.4 percent results in a certain pure metal. In how many days of mining will the total amount of pure metal produced at the quarry be equal to the daily amount of ore mined?
A:10
B:100
C:250
D:400
E:1,000
参考答案及共享解析

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已选答案:
正确答案:
C:250
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